transcription, транскрипция: [ i-ˈfi-shən-sē ]
noun
( plural -cies )
Date: 1633
1. : the quality or degree of being efficient
2.
a. : efficient operation
b.
(1) : effective operation as measured by a comparison of production with cost (as in energy, time, and money)
(2) : the ratio of the useful energy delivered by a dynamic system to the energy supplied to it
3. : efficiency apartment